Breast Feeding Every 3 hours ?

Y

I have a question. So I’ve been breast feeding my baby ever since he was born. And let’s say I breast feed him every three hours. So what if I fed him at 3 but he doesn’t fall asleep until 4:30 so he only sleep for 1 hour and 30 minutes. Do I wake him up at 3 to eat or let him sleep until he wakes up to eat ?